Suction cleaning apparatus



p 1943. c. H. TAYLOR SUCTION CLEANING APPARATUS Filed March 5, 1942 2Sheets-Sheet l INVENTOR CHARLES H.TAYLOR.

WITNESSES:

Sept. 14, 1943. i c. H. TAYLOR 2,329,563

SUCTION CLEANING APPARATUS Filed March 3, 1942 2 Sheets-Sheet '2 Y... i\N p INVENTOR BY" ATTORNEY CHARLES H.7'3YLOR;

Patented Sept. 14, 1943 2,329,553 SUCTION CLEANING APPARATUS Charles H.Taylor, Springfield, Massi, assignor to Westinghouse Electric &Manufacturing Company, East Pittsburgh, Pa., a corporation ofPennsylvania Application March 3, 1942, Serial No. 433,141

15 Claims. (Cl. 15-8) This invention relates to suction cleaners andmore particularly to a cleaner of the type having a vertically-movablenozzle with a rotatable brush therein.

An object is to provide improved apparatus of the type described.

The brush rolls in suction cleaners of the type described sometimesrotate at speeds as high as 3000 R. P. M. In normal operation of suchcleaners the brush roll is in engagement with the covering beingcleaned. This does not damage the covering as long as the cleaner is notallowed to remain in one place for too long a time. However, when acleaner is left standing with the brush roll running on one spot forsome time, the engagement of the brush roll with the covering in onespot for a long time causes carpet burn or unnecessary wear to thecovering.

Accordingly, it is an object of this invention to provide an improvedarrangement, whereby, when the handle of the cleaner is released incertain positions of the same, the brush roll is elevated out of contactwith the surface on which the cleaner rests.

A further object is to provide an imp oved arrangement, whereby, whenthe handle is released in its normal operating range, the weight of thehandle will raise the nozzle and the brush roll out of contact with thesurface on which the cleaner rests.

A still further object is to provide an improved arrangement, whereby,when the handle is moved to storage position, the nozzle and the brushroll are raised out of contact with the surface on which the cleanerrests.

These and other objects are effected by my invention as will be apparentfrom the following description and claims taken in connection with theaccompanying drawings, forming a part of this application, in which:

Fig. 1 is a side elevation of the cleaner, with parts broken away,showing the position of the nozzle when the handle is in its normaloperating range;

Fig. 2 is a view thereof showing the position of the nozzle after thehandle has been released in its normal operating range;

Fig. 3 is a view thereof, showing the position of the nozzle when thehandle is lowered for cleaning under low objects;

Fig. 4 is a bottom plan view of the cleaner with parts broken away;

Fig. 5 is a view thereof, showing the position of the nozzle when thehandle is in storage position;

Fig. 6 is a side elevation of the cleaner, with the handle in storageposition;

Fig. 7 is a detail View of the link; and

Fig. 8 is a detail view of the bracket that limits the vertical movementof the crankpins on which the front wheels are mounted.

Referring to the drawings in detail, a suction cleaner of theconventional fioor type including a casing I 0 is shown for the purposeof illustrating this invention. The casing I0 comprises a motor bodyportion I I which houses a motor I2, a fan chamber p rtion I3 having afan I4 therein for creating a suction, and a downwardly-extending nozzleportion I5 connected to the fan chamber. The motor I2 rotates a shaft I6which extends forwardly into the fan chamber and the nozzle. The fan I Iis mounted on this shaft and rotates therewith. The nozzle portion I 5has an inlet I9 thereto which is defined by a front wall 20, a rear wall2I and a pair of end walls 22. A brush roll 24 is rotatably mounted inthe nozzle sufficiently close to the inlet I9 so that when the nozzle isin proper relation to the surface on which the cleaner rests for propercleaning the brush roll 24 contacts the surface being cleaned. Rotarymotion is applied to the brush roll 24 by a rubber belt '25 which runson a pulley 26 on the brush roll 24 and on an extension of the motorshaft IS.

A wheel pocket, defined by the wall 2|, a rear wall 28, a top wall 29,and a pair of end walls 30, is provided just behind the nozzle inlet IS.The cleaner is supported by a pair of front wheels 35, located in thewheel pocket, and a pair of rear wheels 36. The rear wheels arerotatably carried on an axle 52 which is attached to a pair of spacedribs 3|, which depend from the motor body portion II.

The front wheels are carried on a crankshaft or bowed axle 31 which islocated in the wheel pocket. The axle 31 includes a central portion 38and portions 39 substantially normal thereto and spindles or crankpins40 and 40:: substantially normal to the portions 39. The wheels 35 arerotatably carried on the crankpins 40 and 40a of the axle 31. The axle31 is fixed in the wheel pocket by straps II which attach the portion 38to the rear wall 28 of the wheel pocket. The axle 31 is rotatable, inthe straps 4| as bearings. A torsion spring" surrounds the portion 38 ofthe axle 31 and one end of the same is attached to the axle 31 by meansof a pin 43 and the other end abuts against the under side of the motorbody portion. This spring biases the axle 31 in the direction to raisethe crankpins 40 and 48a and consequently the front wheels 35 upwardinto the wheel pocket. This relative upward movement of the wheels 35results in a corresponding relative downward movement of the front endof the housing and the nozzle will assume a position close to thesurface being cleaned, as shown in Fig. 1. As

the crankpin 48 is pulled rearwardly (or to the right in Fig. 1) by thelink 51 and handle 54, the crankpin is also pulled downwardly and sinceits distance from the surface being cleaned is constant, the nozzle 29is elevated as shown in Fig. 2. A bracket 44 is attached to the top wall29 of the wheel pocket, by means of a flange 45 and screws 46 (Fig. orsome other suitable means, and depends downwardly therefrom. Thisbracket 44 has a notch 41 therein near its lower end in which thecrankpin 40 of the axle 31 moves vertically when the axle 31 is rotatedto move the nozzle vertically with respect to the wheels 35. This notchhas top side portion v48 which abuts against the crankpin 40 to limitthe upward movement of the same and a bottom side portion 49 which abutsagainst the crank pin 48 to limit the downward movement of the same whenthe axle'31 is rotated to move the nozzle vertically upward or downward,respectively, relative to the wheels 35.

A handle 53 is provided for propelling the cleaner over the surface tobe cleaned. The handle has a fork 54 at its lower end, the lower ends ofwhich are pivotally attached to the ribs 3| by a shaft 55. One side ofthe fork 54 has an ear 56 thereon to which one end of a link 51 ispivoted at 58. The other-end of the link 51 has an oblong slot 59therein. The crankpin 48a of the axle 31 is positioned in the oblongslot 59. A latch member 60 havinga projecting portion 5| which has afirst cam surface 6Ia and a second cam surface Gib is pivoted to a sideof the link 51 at 63. The projection 6| on the latch member 50 liesacross the slot 59 in the link 51 and divides it into a front portion59a and a rear portion 59b. A tension spring 65 of greater strength thanthe coil spring 42 is attached to the latch member B0 at 55 and to thelink 51 at 51 and biases the latch member 50 downwardly toward thecrankpin 40. A pin 68 located on the link 51 serves as a stop for thelatch member 60 and prevents the spring 55 from pulling it down too fartoward the crankpin 40.

Operation When the cleaner is used for normal cleaning, that is, withthe handle in its normal operating range, the handle 53 extendsrearwardly at an inclination of less than 45 to the right of a verticalline passing through the handle pivot 55. as seen in Fig. 1. With thehandle 53 within this range, the front wheels 35 and the nozzle arepositioned as shown in Fig. 1. That is, the coil spring 42 biases theaxle 31 so that the crankpin 40 abuts against the top side 48" of thenotch 41 in the bracket 44 and the nozzle is in its lowermost positionrelative to the wheels 35. In this position, the nozzle of the cleaneris in proper relation to the surface being cleaned so that the brushroll 24 properly contacts the surface being cleaned. If the operatorshould release the handle 53 in its normal operating range, such asmight happen if the operator is called to the door, or the phone, or hasto release the handle to move furniture, it will fall downwardly bygravity to the position shown in Fig. 2, which is between the normaloperating range of the handle and its position for'cleaning under lowobjects, such as beds. It will be noted that, during the downwardmovement of the handle 53, the link 51 and consequently the latch member50 move rearwardly from the position shown in Fig. 1, and the crankpin40 is pulled down against the bottom side 49 of the notch 41 by theprojection 5| on the latch 50. The weight of the handle-53 holds thecrankpin 40 against the bottom side 40 of the notch 41, and the nozzleis raised to its uppermost position relative to the wheels 35. In thisposition the nozzle and the brush roll therein are raised from thesurface on which the cleaner rests a suflicient distance so that thebrush roll 24 cannot contact the surface on which the cleaner rests.

If it is desired to use the cleaner for cleaning under low objects, suchas beds or the like, the handle is moved downwardly to a positionapproximately as indicated in Fig. 3. This is done by moving the handlefirst to the position indicated in Fig. 2, then applying an additionaldownward force to the handle 53. This force moves the link 51 and thelatch member 60 still further rearwardly, from the position shown inFig. 2, and causes the cam surface 61a. to ride over the crankpin 40 andraise the latch member 60, against the force of the spring 65, andpermit the crankpin 40 to be biased by the coil spring 42 into the frontportion 59a of the slot 59,, as shown in Fig. 3. In this position of thehandle 53, the coil spring 42 holds the crankpin 40 against the top side48 of the notch 41. In this position, the nozzle is in substantially thesame relation to the surface being cleaned as when the handle is in itsnormal operating range, as shown in Fig. 1, and the brush roll 24properly contacts the surface being cleaned. To raise the handle 53 fromthis position to its normal operating or storage position, an upwardforce is applied to the end of the handle 53. This causes the camsurface Bib to ride over the crankpin 40a and raise the latch member 60to permit the crankpin 40 to pass back to the rear portion 59b of theslot 59, as seen in Figs. 2, 3, and 5.

When the handle 53 is it is inclined to the left of a vertical linepassing through the pivot 55, as shown in Figs. 5 and 6, in whichposition it is held against a stop member in its storage position,

64 by the force of gravity acting on the handle,

which stop is attached to the motor body. It will be noted that inmoving the handle 53 from its normal operating range to this positionthe pivot point 58 is moved to a position below a line passing throughthe handle pivot 55 and the center of the crankpin 40a and rearwardly ofthe position shown in Fig. l, and, as a consequence, the link 51 and thelatch 60 are also moved rearwardly, from the position shown in Fig. 1,far enough so that the crankpin 40a is pulled downward by the projection6| on the latch 60 to a position so that the crankpin 40 isapproximately midway between the sides 48 and 49 of the notch 41. Inthis position of the crankpins, the nozzle is in an intermediateposition relative to the wheels 35 but far enough upward from thepositions shown in Figs. 1 and 3 so that the brush roll 24 will notcontact the surface on which the cleaner rests.

It is important to raise the brush roll 24 out of contact with thesurface on which the cleaner rests when the handle is in its storageposition,

because sometimes the operator may place the cleaner on the surface tobe cleaned and connect it to a source of power with the switch turnedonand leave it standing for some time before starting to move it backand forth over the surface. If this should happen, the brush roll 24 ifallowed to run in contact with one spot on the surface for a long timemight injure the surface.

surface rides over said crankarm and permits From the foregoingdescription, taken in connection with the drawings, it is seen that thisinvention provides an improved arrangement, whereby the brush roll iselevated out of contact with the surface on which the cleaner rests whenthe handle is released in its normal operating position, and, also whenthe handle is moved to its storage position.

While I have shown my invention in but one form, it will be obvious tothose skilled in the art that it is not so limited, but is susceptibleof various changes and modifications without departing from the spiritthereof, and I desire, therefore, that only such limitations shall beplaced thereclaims.

What I claim is: v

1. In a suction cleaner, a casirig having a downwardly-extending nozzleat the forward end thereof, a rotatable cleaning member mounted in saidnozzle to contact the surface being cleaned, rear supporting wheels, acrankshaft pivoted rearwardly of said nozzle, front supporting wheelsrotatably carried on said crankshaft, a handle pivoted rearwardly ofsaid front wheels for propelling the cleaner over the surface to becleaned, and a link pivoted to the lower end of said handle and slidablyengaging said crankshaft, said link coacting between said handle andsaid crankshaft in such manner that when said handle is moved to aposition beyond its range of normal operation such movement will rotatesaid crankshaft and lower said front wheels relative to said nozzle,which movement will elevate said nozzle and lift said rotatable cleaningmember from contact with the surface being cleaned.

2. In a suction cleaner, a casing having a downwardly-extending nozzleat the forward end thereof, a rotatable cleaning member mounted in saidnozzle to contact the surface being cleaned, rear supporting wheels, abowed axle or crankshaft pivoted rearwardly of said nozzle, said axleincluding a portion by means of which it is pivoted to said casing andoppositely-disposed crankarms, front supporting wheels rotatably carriedon said crankarms, spring means biasing said bowed axle or crankshaft ina direction to move said front wheels vertically, a handle pivotedrearwardly of said front wheels for propelling the cleaner over thesurface to be cleaned, a link pivoted at one end to said handle, theopposite end of said link having an oblong slot therein in which one ofsaid crankarms is positioned, a latch member pivoted to one side of saidlink and having a projection thereon which extends across said oblongslot in said link so that when said handle is released within its normaloperating range the weight of the same will move said link rearwardlyand pull the crankarm carried in said slot downwardly by said projectionand move said front wheels downward relative to said nozzle and elevatesaid nozzle and the rotatable cleaning member positioned therein, a stoplimiting the downward movement of said front wheels, said projectionhaving a cam surface thereon whereby when said handle is moved furtherdownwardly from the position in which it comes to rest when released inits normal operating range, said cam upon as are specifically set forth'in the appended said spring to rotate said bowed axle or crankshaft andraise said front wheels relative to said nozzle and permit said nozzleand the rotatable cleaning member therein to move downwardly to aposition such that said nozzle is in proper relation to the surfacebeing cleaned for proper cleaning thereof.

3. In a suction cleaner, a casing having a downwardly-extending nozzleat the forward end thereof, a rotatable cleaning member mounted in saidnozzle to contact the surfacebeing cleaned, rear supporting wheels, abowed axle or crankshaft pivoted rearwardly of said nozzle, said axleincluding a portion by means of which it is pivoted to said casing andoppositely-disposed crankarms, front supporting means rotatably carriedon said crankarms, a coiled spring arranged to apply a turning moment tosaid axle in a direction to move said front wheels vertically relativeto said nozzle, a handle pivoted rearwardly of said front wheels forpropelling the cleaner over the surface being cleaned, a link pivoted atone end to said handle, the other end of said link having an oblong slottherein, a latch member pivoted at one side of said link and having aprojection thereon extending across said oblong slot in said link anddividing said slot into first and second portions, one of said crankarmsof said bowed axle or crankshaft being positioned in said first portionof said oblong slot when said handle is in its normal operating range orin its storage position, the weight of said handle being such that whenreleased in its normal operating range it will drop by gravity and movesaid link rearwardly and pull the crankarm positioned in said oblongslot rearwardly by said projection and bias said front wheels downwardlyrelative to said nozzle and elevate said nozzle and consequently therotatable cleaning member mounted therein to such a position that therotatable cleaning member does not contact the surface on which thecleaner rests, said projection on said latch having first and second camsurfaces thereon whereby when said handle is moved further downwardlyfrom the position in which it comes to rest when released in its normaloperating range into a position for cleaning under low objects, saidfirst cam surface rides over the crankarm positioned in said oblong slotand permits said coil spring to rotate said bowed axle or crankshaft andmove the crankarm positioned in said oblong slots forwardly into thesecond portion of said slot, and raise said front wheels relative tosaid nozzle to a position such that said nozzle and the rotatablecleaning member is lowered into proper relation to the surface beingcleaned for proper cleaning thereof.

4. The structure recited in claim 3, and a second cam surface on saidprojection whereby when said handleis raised upwardly from its positionfor cleaning under low objects said second cam surface rides over thecrankarm carried in said oblong slot and raises said latch to permitsaid handle to be moved to its normal operating range or storageposition.

5. The structure recited in claim 3, wherein upon moving said handle tostorage position said bowed axle or crankshaft is rotated in a directionto move said front wheels downwardly relative to said nozzle and raisesaid nozzle and the rotatable cleaning member positioned therein fromcontact with the surface on which the cleaner rests.

6. In a suction cleaner, a casing having a downwardly-extending. nozzleat the forward end thereof, a rotatable cleaning member mounted in saidnozzle to contact the surface being cleaned, rear supporting wheelsattached to said casing, a bowed axle or crankshaft pivoted rearwardlyof said nozzle, said axle including a portion by means of which it ispivoted to said casing and oppositely-disposed crankpins, frontsupporting wheels rotatably carried on said crankpins, a coiled springsurrounding that portion of said bowed axle or crankshaft which ispivoted to said casing and arranged to bias said axle or crankshaft in adirection to move said front wheels vertically relative to said nozzle,a handle pivoted rearwardly of said front wheels for propelling thecleaner over the surface being cleaned, a link pivoted at one end tosaid handle, the other end of said link having an oblong slot therein, alatch member pivoted to one side of said link and having a projectionthereon which extends across said oblong slot and divides it into firstand second portions, said projection having first and second camsurfaces thereon, one of said crankpins being positioned in said firstportion of said oblong slot when said handle is in its normal operatingrange or in its storage position, the weight of said handle being suchthat when it is released in its normal operating range it will fall bygravity downwardly and pull the crankpin located in said oblong slotdownwardly by said projection and move said front wheels downwardrelative to saidnozzle and elevate said nozzle and said rotatablecleaning member out of contact with the surface being cleaned, saidfirst cam surface of said projection being so formed that as said handleis moved further downwardly from the position in which it comes to restwhen released in its normal operating range for cleaning under lowobjects, said first cam surface will ride over the erankpin positionedin said oblong slot and raise said latch and permit said coiled springto rotate said bowed axle or crankshaft and move the crankpin positionedin the oblong slot into said second portion of said oblong slot, whichmovement moves said front wheels vertically relative to said nozzle andlowers said nozzle and consequently said rotatable cleaning member intoproper cleaning relation to the surface being cleaned, said second camsurface on said projection being so fashioned that when said handle israised from its position for cleaning under low objects, said camsurface will ride over the crankpin carried in said oblong slot andraise said projection and permit the crankpin to pass back to the firstportion of said oblong slot.

7. In a suction cleaner, a casing having a downwardly-extending nozzleat the forward end thereof, a rotatable cleaning member mounted in saidnozzle to contact the surface being cleaned, rear supporting wheels forsaid casing, a bowed axle pivoted to said casing rearwardly of saidnozzle, front supporting wheels rotatably carried on said bowed axle, ahandle pivoted to said casing rearwardly of said front supportingwheels, link mechanism coacting between said handle and said bowed axle,said handle and said link mechanism and said bowed axle being socorrelated that when said handle is released in its normal operatingrange it will fall by gravity and move said link rearwardly from itsnormal position when the handle is within its normal operating range androtate said bowed axle which moves said front wheels vertically relativeto said nozzle and elevates said nozzle and the rotatable cleaningmember carried therein out of contact with the surface being cleaned,and when said handle i moved to its storage position said link mechanismis likewise moved rearwardly from its position when the handle is withinits normal operating range and rotates said bowed axle which moves saidfront wheels vertically relative to said nozzle and elevates said nozzleand the rotatable cleaning member carried therein out of contact withthe surface being cleaned.

8. In a suction cleaner, a casing having a downwardly-extending nozzleat the forward end thereof, a rotatable cleaning member mounted in saidnozzle to contact the surface being cleaned,

rear supporting wheels, at bowed axle or crankshaft pivoted rearwardlyof said nozzle, aid axle including a portion by means of which it ispivoted to said casing and oppositely-disposed crankarms, frontsupporting wheels rotatably carried on said crankarms, spring meansbiasing said bowed axle or crankshaft in a direction to move said frontwheels upwardly, a handle pivoted rearwardly of said front wheels forpropelling the cleaner over the surface to be cleaned, and a linkpivoted at one end to said handle, the opp site end of said link havinga slot therein in which one of said crankarms is positioned, the partsbeing constructed and arranged so that when said handle is releasedwithin it normal operating range the weight of the same will move saidlink rearwardly and pull the crankarm carried in said slot downwardlyand move said front wheels downward relative to said nozzle and elevatesaid nozzle and the rotatable cleaning member positioned therein.

9. In a suction cleaner, a casing having a nozzle at the forward endthereof, a rotatable cleaning member mounted in said nozzle to contactthe surface being cleaned, rear supporting means for said casing, abracket having a notch therein carried by the front portion of saidcasing, front supporting means for said casing engaging and verticallymovable in said notch, a handle pivoted rearwardly of said frontsupporting means for propelling the cleaner over the surface to becleaned, a link engaging said front supporting means and being pivotedat its rear end to said handle, and stops for limiting th movement ofsaid front supporting means, the parts being constructed and arranged sothat when said handle is moved in either direction beyond its normalrange of operation said front supporting means are actuated to raisesaid nozzle out of contact with the surface being cleaned.

10. In a suction cleaner, a casing including a nozzle, rear wheels forsupporting the rear end of said casing, levers pivoted to the cleaner ona horizontal axis adjacent the nozzle, front wheels mounted on saidlevers for supporting the front end of said casing, said levers beingmovable to raise and lower the front wheels relative to the casing, apivotally-mounted handle for propelling said casing over the surface tobe cleaned, and a link pivoted to the lower end of said handle and to atleast one of said levers in such manner that when said handle is movedin either direction beyond its normal range of operation said link ismoved lengthwise and moves said lever to lower the front wheel relativeto the casing and thereby to raise the nozzle with reference to thesurface being cleaned.

11. In a suction cleaner, a casing including a nozzle, rear wheels forsupporting the rear end of said casing, a transversely-extending shaftrotatably secured to said casing, to the rear, and near the top of saidnozzle, crankpins extending from, and normal to said shaft, wheelsmounted on said crankpins for supporting the front end of said casing,means for normally urging said crankpins forwardly and upwardly withreference to the horizontal axis of said shaft, a pivotally-mountedhandle for propelling said casing over the surface to be cleaned, and alink pivoted to the lower end of said handle, and at least to one ofsaid crankpins, the parts being constructed and arranged so that whensaid handle is moved in either direction beyond its normal range ofoperation said link is actuated to move said front wheels downwardly andrearwardly relative to the horizontal axis of said shaft thereby raisingsaid nozzle with reference to the surface being cleaned.

12. In a suction cleaner, a casing having a nozzle at the forward endthereof to contact the surface being cleaned, rear supporting means,vertically movable front supporting means, a handle pivoted rearwardlyof said front supporting means for propelling said cleaner over thesurface to be cleaned, and means, operable by movement of the handle, toelevate said nozzle relative to said front supporting means, comprisinga lever angularly movable with said handle, a link pivotally connectedto said lever and operatively connected to said front supporting means,the parts being so constructed and arranged that, when said handle ismoved in either direction beyond its normal range of operation, saidlink is moved substantially longitudinally to depress said frontsupporting means relative to said nozzle to elevate the latter, saidmeans being inoperative to raise said nozzle during the movement of saidhandle in its normal range of operation.

13. The structure recited in claim 12 in which the front supportingmeans comprise an axle pivoted to said casing, crankarms at the oppositeends of said axle, wheels carried by said crankarms, and means fornormally rotating said crankarms in one direction to elevate said wheelsrelative to said casing to depress said nozzle, and in which thelongitudinal movement of said link rotates said crankarms in theopposite direction to depress said wheels relative to said casing andelevate said nozzle. v

14. In a suction cleaner, a casing having a nozzle at the forward endthereof normally to contact the surface being cleaned, rear supportingmeans, vertically movable crankarms, front supporting wheels carried bysaid crankarms, means for normally urging said crankarms and said frontwheels upwardly relative to said nozzle to depress the latter, a handlepivoted rearwardly of said front supporting wheels for propelling saidcleaner over the surface to be cleaned, and means operable by themovement of the handle to elevate said nozzle relative to said frontsupporting wheels, comprising a lever angularly movable with saidhandle, and a link pivotally connected to said lever and to one of saidcrankarms, the parts being so constructed and arranged that, when saidhandle is moved in either direction beyond its normal range ofoperation,

said link is moved substantially longitudinally to flepress saidcrankarm and said front wheels relative to said nozzle to elevate thelatter, said last-mentioned means being inoperative to raise said nozzleduring the movement of said handle in its normal range of operation.

15. In a suction cleaner, a casing having a nozzle. normally contactingthe surface being cleaned, vertically fixed supporting means for saidcasing, vertically movable supporting means for said casing, a handlepivoted to said casing for propelling said cleaner, and means operableby movement of said handle for raising said nozzle out of contact withthe surface being cleaned, comprising a lever operatively connected tosaid movable supporting means, a lever movable with said handle, and alink pivotally connected to said levers, said levers and said link beingso constructed and arrangedthat, when said handle is moved in eitherdirection beyond its normal range of operation, said link is movedlongitudinally to depress said movable supporting means relative to saidcasing to raise said nozzle, said link and said levers being inoperativeduring the movement of said handle in its normal range of operation.

CHARLES H. TAYLOR.

